An illustrated guide to building an F5 - Page 55

IZHAKKATZ · 17th October 2012, 06:28 PM

resistance in R4 is drifting and not stable

AudioSan · 17th October 2012, 06:28 PM

yes. all that is spot on.

AudioSan · 17th October 2012, 06:30 PM

hmmm. it drifts even when you dont turn the pot?

IZHAKKATZ · 17th October 2012, 08:20 PM

yes it does

AudioSan · 17th October 2012, 08:30 PM

thats not right.

IZHAKKATZ · 17th October 2012, 08:41 PM

I've checked with two meters- its keep going up (resistance of R4)

AudioSan · 17th October 2012, 08:44 PM

do you use the 4.7K thermistors?

IZHAKKATZ · 17th October 2012, 08:48 PM

yes I do

AudioSan · 17th October 2012, 09:17 PM

and they have good contact with the fets?

IZHAKKATZ · 20th October 2012, 03:57 PM

had a chance to check only now
one leg of Q2 does contact one leg of TH2

Anything else I can check?

17th October 2012, 06:28 PM	#542
AudioSan diyAudio Member Join Date: Feb 2009 Location: Trondheim	yes. all that is spot on. __________________ aleph P1.7 pre. F5 power amp. CDpro2(need DAC). Vivaldi8 speakers

17th October 2012, 06:30 PM	#543
AudioSan diyAudio Member Join Date: Feb 2009 Location: Trondheim	hmmm. it drifts even when you dont turn the pot? __________________ aleph P1.7 pre. F5 power amp. CDpro2(need DAC). Vivaldi8 speakers

17th October 2012, 08:30 PM	#545
AudioSan diyAudio Member Join Date: Feb 2009 Location: Trondheim	thats not right. __________________ aleph P1.7 pre. F5 power amp. CDpro2(need DAC). Vivaldi8 speakers

17th October 2012, 08:44 PM	#547
AudioSan diyAudio Member Join Date: Feb 2009 Location: Trondheim	do you use the 4.7K thermistors? __________________ aleph P1.7 pre. F5 power amp. CDpro2(need DAC). Vivaldi8 speakers

17th October 2012, 09:17 PM	#549
AudioSan diyAudio Member Join Date: Feb 2009 Location: Trondheim	and they have good contact with the fets? __________________ aleph P1.7 pre. F5 power amp. CDpro2(need DAC). Vivaldi8 speakers


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17th October 2012, 06:28 PM	#541
IZHAKKATZ diyAudio Member Join Date: Jul 2004 Location: Israel	resistance in R4 is drifting and not stable

17th October 2012, 08:20 PM	#544
IZHAKKATZ diyAudio Member Join Date: Jul 2004 Location: Israel	yes it does

17th October 2012, 08:41 PM	#546
IZHAKKATZ diyAudio Member Join Date: Jul 2004 Location: Israel	I've checked with two meters- its keep going up (resistance of R4)

17th October 2012, 08:48 PM	#548
IZHAKKATZ diyAudio Member Join Date: Jul 2004 Location: Israel	yes I do

20th October 2012, 03:57 PM	#550
IZHAKKATZ diyAudio Member Join Date: Jul 2004 Location: Israel	had a chance to check only now one leg of Q2 does contact one leg of TH2 Anything else I can check?

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